(2R,3R,4R,4aR,10bR)-8,9,10-trimethoxy-3,4-bis(phenylmethoxy)-2-(phenylmethoxymethyl)-2,3,4,4a,6,10b-hexahydropyrano[3,2-c]isochromene | 647832-31-3

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 类固醇和类固醇衍生物
• 英文名称: (2R,3R,4R,4aR,10bR)-8,9,10-trimethoxy-3,4-bis(phenylmethoxy)-2-(phenylmethoxymethyl)-2,3,4,4a,6,10b-hexahydropyrano[3,2-c]isochromene
• CAS: 647832-31-3
• 化学式: C₃₇H₄₀O₈
• 分子量: 612.72
• InChiKey: HKHMAAYZUSHMFT-RXVRYVMUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5
• 重原子数：
  45
• 可旋转键数：
  13
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.35
• 拓扑面积：
  73.8
• 氢给体数：
  0
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  (2R,3R,4R,4aR,10bR)-8,9,10-trimethoxy-3,4-bis(phenylmethoxy)-2-(phenylmethoxymethyl)-2,3,4,4a,6,10b-hexahydropyrano[3,2-c]isochromene 在 三氟化硼乙醚 作用下， 以 二氯甲烷 为溶剂， 以81%的产率得到(2R,3R,4R,4aR,10bS)-8,9,10-trimethoxy-3,4-bis(phenylmethoxy)-2-(phenylmethoxymethyl)-2,3,4,4a,6,10b-hexahydropyrano[3,2-c]isochromene
  参考文献：
  名称：

  Intramolecular C-glycosylation of 2-O-benzylated pentenyl mannopyranosides: remarkable 1,2-trans stereoselectivity

  摘要：

  The IDCP-promoted intramolecular C-glycosylation of pentenyl alpha-mannopyranosides carrying, at O-2, an activated benzyl group gave, unexpectedly, the 1,2-trans-fused bicyclic product which corresponds to an alpha-C-aryl mannopyranose derivative. This remarkable, strained C-glycosyl compound was rapidly epimerized to the more stable 1,2-cis product on treatment with BF3.Et2O. The IDCP-reaction product could be elaborated into a 2-(alpha-C-mannopyranosyl)-3,4,5-trimethoxybenzyl alcohol derivative. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2003.10.006
• 作为产物：
  描述：

  2,3,4,6-四-O-乙酰基-1-溴-Alpha-D-甘露糖 在 氢氧化钾 、 三氟甲磺酸三甲基硅酯 、 iodonium di(2,4,6-trimethylpyridine) perchlorate 、 四丁基溴化铵 、 sodium methylate 、 sodium hydride 作用下， 以 四氢呋喃 、 2,4,6-三甲基吡啶 、 甲醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 5.0h， 生成 (2R,3R,4R,4aR,10bR)-8,9,10-trimethoxy-3,4-bis(phenylmethoxy)-2-(phenylmethoxymethyl)-2,3,4,4a,6,10b-hexahydropyrano[3,2-c]isochromene
  参考文献：
  名称：

  Intramolecular C-glycosylation of 2-O-benzylated pentenyl mannopyranosides: remarkable 1,2-trans stereoselectivity

  摘要：

  The IDCP-promoted intramolecular C-glycosylation of pentenyl alpha-mannopyranosides carrying, at O-2, an activated benzyl group gave, unexpectedly, the 1,2-trans-fused bicyclic product which corresponds to an alpha-C-aryl mannopyranose derivative. This remarkable, strained C-glycosyl compound was rapidly epimerized to the more stable 1,2-cis product on treatment with BF3.Et2O. The IDCP-reaction product could be elaborated into a 2-(alpha-C-mannopyranosyl)-3,4,5-trimethoxybenzyl alcohol derivative. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2003.10.006

文献信息

• Intramolecular C-glycosylation of 2-O-benzylated pentenyl mannopyranosides: remarkable 1,2-trans stereoselectivity
  作者：Nicolas Girard、Cyril Rousseau、Olivier R. Martin

  DOI：10.1016/j.tetlet.2003.10.006

  日期：2003.12

  The IDCP-promoted intramolecular C-glycosylation of pentenyl alpha-mannopyranosides carrying, at O-2, an activated benzyl group gave, unexpectedly, the 1,2-trans-fused bicyclic product which corresponds to an alpha-C-aryl mannopyranose derivative. This remarkable, strained C-glycosyl compound was rapidly epimerized to the more stable 1,2-cis product on treatment with BF3.Et2O. The IDCP-reaction product could be elaborated into a 2-(alpha-C-mannopyranosyl)-3,4,5-trimethoxybenzyl alcohol derivative. (C) 2003 Elsevier Ltd. All rights reserved.